Hey all great information here. I am very close to purchasing a new ZTR and am leaning towards the Fastrak SD 48. I really want the 54 inch version but my local dealer is quoting like $1200 more for the bigger cut and motor. Does anyone know why there is such a large difference between the machines for such little differences? Also, I am looking at the Scag Freedom Z but like I said currently am leaning toward the Fastrak. Any opinions out there would be appreciated. I will be cutting about 2 manicured acres of bermuda on flat surfaces once a week (maybe more). We have a fair amount of trees but nothing that the 48 or 54 cannot manuever through. Also, my lawn is soggy a fair amount of the time due to a large family and a septic that sprinkles the lawn as well as a large in ground swimming pool and a full yard sprinkler system. I do plan on mulching. Right now I am using a JD LT160 and can't stand getting on it. It is no fun to mow with and takes to long hence the reason for the switch to the ZTR.